Disclosure of Invention
The invention aims to provide a pipeline inner circle abrasive belt polishing device, which solves the problems in the prior art, and realizes flexible contact polishing of the pipeline inner circle by utilizing an abrasive belt driven by a driving wheel and matching with the rotation of a pipeline.
The invention provides a pipeline inner circle abrasive belt polishing device which comprises a polishing conveyor belt, an abrasive belt polishing mechanism and a driving mechanism, wherein the polishing conveyor belt is used for driving a pipeline to rotate, the abrasive belt polishing mechanism comprises an abrasive belt, a pressing grinding wheel and a driving wheel for driving the abrasive belt to rotate, the abrasive belt is sleeved on the pressing grinding wheel and the driving wheel, and the driving mechanism is used for driving the pressing grinding wheel to enter and exit the pipeline to be polished.
Preferably, the front end of the grinding wheel is provided with a pipeline supporting mechanism, the pipeline supporting mechanism comprises a limiting plate, a plurality of supporting arms, a driven gear, a driving gear and a reducing driving motor, the limiting plate is arranged at the front end of the grinding wheel, a plurality of limiting grooves are formed in the limiting plate in a divergent mode, the supporting arms are slidably arranged in the limiting grooves, the driven gear is rotatably arranged at the front end of the limiting plate, arc-shaped holes are formed in positions, corresponding to the supporting arms, of the driven gear, limiting rods are arranged on the supporting arms, the limiting rods penetrate through the arc-shaped holes, and the reducing driving motor drives the driven gear to rotate through the driving gear.
Preferably, the front end of the grinding wheel is provided with a reducing screw transmission mechanism, the reducing screw transmission mechanism comprises a screw driving motor, a reducing screw and a screw slider, the screw driving motor is in transmission connection with the reducing screw, the screw slider is in threaded connection with the reducing screw, sliding guide rails are arranged on two sides of the screw slider, the reducing slider is in sliding connection with the sliding guide rails, and the limiting plate is connected with the reducing slider and/or the screw slider, and the reducing driving motor is connected with the reducing slider.
Preferably, the driving mechanism comprises a lifting motion mechanism, a linear motion mechanism and a swinging mechanism which are sequentially connected, and the swinging mechanism is provided with the abrasive belt polishing mechanism.
Preferably, the lifting movement mechanism comprises a bracket, a lifting driving motor, a lifting screw rod and a platform supporting plate, wherein the lifting screw rod is rotatably arranged on the bracket, the lifting screw rod is in transmission connection with the lifting driving motor, a transmission seat is in threaded connection with the lifting screw rod, and the transmission seat is connected with the platform supporting plate.
Preferably, the linear motion mechanism comprises a linear driving motor, a speed reducer, a transmission belt, belt wheels, linear guide rails and a sliding base, wherein the linear driving motor drives the belt wheels to rotate through the speed reducer and the transmission belt, two belt wheels are arranged on a platform supporting plate, a synchronous belt is arranged on each belt wheel, the linear guide rails are arranged on the platform supporting plate, and the sliding base is arranged on the linear guide rails in a sliding mode and is connected with the synchronous belt.
Preferably, the swing mechanism comprises a swing base and a swing driving motor, the swing driving motor is arranged on the sliding base, a central shaft is arranged at the bottom of the swing base, the central shaft is rotatably arranged on the sliding base through a swing bearing seat, the swing driving motor is in transmission connection with the central shaft, and the swing base is provided with a driving wheel and a grinding wheel.
Preferably, the swing base is further provided with a tensioning cylinder, a tensioning wheel and at least one auxiliary wheel for improving transmission stability of the abrasive belt, the tensioning cylinder is connected with the tensioning wheel, and the tensioning wheel is abutted to the inner peripheral wall of the abrasive belt.
Preferably, the polishing conveyor belt comprises a plurality of driving roller groups axially arranged along the pipeline to be polished, the driving roller groups comprise two driving rollers, the axes of the driving rollers are parallel to the axis of the pipeline to be polished, at least one driving roller is connected with a driving motor, and the pipeline to be polished is driven to rotate.
Preferably, the abrasive belt polishing device in the inner circle of the pipeline further comprises a clamping mechanism, the clamping mechanism comprises a clamping base, a clamping lifting seat, a rotating motor, a rotating base, a cylinder support arm, a clamping cylinder and a clamping wheel, the clamping lifting seat moves up and down to be arranged on the clamping base, the rotating motor is arranged on the clamping lifting seat, the cylinder support arm is connected with the rotating motor through the rotating base, the cylinder support arm is far away from one end of the rotating base, the clamping cylinder is provided with the clamping cylinder, the clamping cylinder performs vertical telescopic motion, and a telescopic end of the clamping cylinder is rotationally connected with the clamping wheel through a clamping mounting seat.
Compared with the prior art, the invention mainly achieves the following technical effects:
When the driving wheel is utilized to drive the abrasive belt to move, the belt is matched to polish to drive the pipeline to rotate, so that polishing of the inner circle of the pipeline is completed by utilizing the abrasive belt, polishing efficiency is improved, centrifugal vibration problem during polishing of the rotary grinding head and step defect problem existing during polishing of the telescopic grinding tool are avoided, polishing effect is effectively improved, meanwhile, the driving wheel and the grinding wheel are designed, the grinding wheel is pressed away from the motor during polishing, stress of a motor shaft and working environment of the motor can be improved, and service life and stability of the polishing device can be improved.
Compared with the prior art, the other schemes of the invention have the following technical effects:
The setting of pipeline supporting mechanism can provide stable support at the end of polishing of abrasive band, and then improves the effect of polishing, moreover because the cooperation of passive gear and support arm, can realize that the support arm is flexible in the slip of spacing inslot, and then adjust pipeline supporting mechanism's external diameter, can adapt to the pipeline of different pipe diameters, and can adapt to the pipeline of reducing, improve device's application scope.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a belt sander for sanding an inner circle of a pipe in accordance with an embodiment of the present invention;
FIG. 2 is a schematic view of a clamping mechanism according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a lifting mechanism according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of a linear motion mechanism according to an embodiment of the present invention;
FIG. 5 is a schematic view of a first view structure of a driving mechanism according to an embodiment of the present invention;
FIG. 6 is a schematic view of a second view structure of the driving mechanism according to the embodiment of the present invention;
FIG. 7 is a schematic diagram of a swing mechanism according to an embodiment of the present invention;
FIG. 8 is a schematic view of a pipe support mechanism according to an embodiment of the present invention;
FIG. 9 is a schematic diagram of a limiting plate and a supporting arm according to an embodiment of the present invention;
FIG. 10 is a schematic diagram of a variable diameter screw drive mechanism in an embodiment of the invention;
The device comprises a clamping mechanism, a 2-grinding conveyor belt, a 3-lifting mechanism, a 4-linear motion mechanism, a 5-swinging mechanism, a 6-cylinder support arm, a 7-rotating base, a 8-rotating motor, a 9-clamping lifting base, a 10-clamping base, a 11-clamping cylinder, a 12-clamping installation base, a 13-clamping wheel, a 14-platform support plate, a 15-lifting screw rod, a 16-bracket, a 17-commutator, a 18-lifting driving motor, a 19-linear guide rail, a 20-sliding base, a 21-belt pulley, a 22-speed reducer, a 23-linear driving motor, a 24-pipeline support mechanism, a 25-pressing wheel, a 26-first auxiliary wheel, a 27-second auxiliary wheel, a 28-swinging base, a 29-tensioning cylinder, a 30-tensioning wheel, a 31-driving wheel, a 32-grinding driving motor, a 33-swinging bearing seat, a 34-swinging driving motor, a 35-supporting arm, a 36-driven gear, a 37-reducing driving motor, a 38-driving gear, a 39-limiting plate, a 40-reducing screw rod, a 41-screw rod slider, a 42-reducing motor, a 43-reducing screw rod, a guide rail driving mechanism, a 45-supporting installation plate.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide a pipeline inner circle abrasive belt polishing device, which solves the problems in the prior art and realizes flexible contact polishing of the pipeline inner circle by utilizing an abrasive belt driven by a driving wheel and matching with the rotation of a pipeline.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
Referring to fig. 1-10, an apparatus for polishing an inner circle of a pipeline is provided, including a polishing belt 2 for driving the pipeline to rotate, an abrasive belt polishing mechanism and a driving mechanism, the abrasive belt polishing mechanism includes an abrasive belt, a pressing grinding wheel 25 and a driving wheel 31 for driving the abrasive belt to rotate, the abrasive belt is sleeved on the pressing grinding wheel 25 and the driving wheel 31, the driving mechanism is used for driving the pressing grinding wheel 25 to enter and exit the pipeline to be polished, the driving wheel 31 is driven by a corresponding polishing driving motor 32, and then drives the abrasive belt to move, the abrasive belt is coupled with the rotation of the pipeline, so that polishing efficiency and polishing effect can be improved, and meanwhile, since the motor does not directly drive the pressing grinding wheel 25, the pressing grinding wheel 25 is far away from the motor, stress of a motor shaft and working environment of the motor can be improved, and service life and stability of the polishing apparatus can be improved.
The substrate of abrasive band is the cloth foundation, contacts and extrudes each other and can produce certain deformation in order to adapt to pipeline surface state with the pipeline when polishing, realizes flexible contact polishing, and abrasive band rear pressure grinding wheel 25 can adopt the rubber wheel simultaneously, and the rubber wheel also has certain deflection, improves operating mode adaptability, further realizes flexible contact polishing.
In one embodiment, the front end of the grinding wheel 25 is provided with a pipe supporting mechanism 24, the pipe supporting mechanism 24 comprises a limiting plate 39, a plurality of supporting arms 35, a driven gear 36, a driving gear 38 and a variable diameter driving motor 37, the limiting plate 39 is arranged at the front end of the grinding wheel 25, the front end of the grinding wheel 25 refers to one side of the grinding wheel 25 far away from the driving wheel 31, the limiting plate 39 is provided with a plurality of limiting grooves in a divergent manner, the supporting arms 35 are slidably arranged in the limiting grooves, the limiting grooves can limit the supporting arms 35 to move only along the directions of the limiting grooves (namely, the length direction of the supporting arms 35), the driven gear 36 is rotatably arranged at the front end of the limiting plate 39, in particular, a bearing can be arranged in the middle of the limiting plate 39 to be rotatably connected with a gear shaft of the driven gear 36, an arc-shaped hole is arranged at a position corresponding to the supporting arms 35 on the driven gear 36, the number of the arc holes is the same as that of the supporting arms 35, the arc holes and the supporting arms 35 are uniformly distributed around the axis of the driven gear 36, the supporting arms 35 are provided with limiting rods, the limiting rods penetrate through the arc holes, the variable-diameter driving motor 37 drives the driven gear 36 to rotate through the driving gear 38, the driven gear 36 rotates, and meanwhile, the limiting rods move along the arc holes due to the limiting effect of the arc holes, so that the expansion and contraction of the supporting arms 35 in the limiting grooves are reflected, the outer diameter of the integral pipeline supporting mechanism 24 is regulated, pipelines with different diameters can be adapted, the application range of the device can be adapted, the distance between the grinding wheel 25 and the driving wheel 31 can be prolonged on the basis of designing the pipeline supporting mechanism 24, the shaking condition caused by overlong distance and the movement process of the grinding wheel 25 can not occur, the distance between the grinding wheel 25 and the driving wheel 31 can be designed according to the length of the pipe to be polished, so that the driving mechanism can send the grinding wheel 25 to any position of the pipe to be polished, and continuous polishing can be realized.
The end of the support arm 35 remote from the limiting plate 39 can be provided with balls to reduce friction with the inner wall of the pipeline.
Because the multiple supporting arms 35 are synchronously moved, the axis of the pipe supporting mechanism 24 formed by the multiple supporting arms 35 is the axis of the driven gear 36, so that a reducing screw rod transmission mechanism is required to be arranged at the front end of the grinding wheel 25 and used for adjusting the axis position of the pipe supporting mechanism 24 so as to be coaxial with the pipe to be ground, and a good supporting effect is achieved, and the following specific steps are that: the reducing screw transmission mechanism comprises a screw driving motor 43, a reducing screw 40 and a screw slide block 41, wherein the screw driving motor 43 is in transmission connection with the reducing screw 40, the screw slide block 41 is in threaded connection with the reducing screw 40, sliding guide rails 44 are arranged on two sides of the screw slide block 41, the reducing slide block 42 is in sliding connection with the sliding guide rails 44, the reducing slide block 42 is connected with the screw slide block 41 to generate synchronous motion, the limiting plate 39 is connected with the reducing slide block 42 and/or the screw slide block 41, when the limiting plate 39 is connected with the reducing slide block 42 and the screw slide block 41, the limiting plate 39 represents the connection structure of the reducing slide block 42 and the screw slide block 41, when the limiting plate 39 is connected with one of the reducing slide block 42 and the screw slide block 41, the connecting structure is required to be independently arranged to connect the reducing slide block 42 and the screw slide block 41, and the axis of the driven gear 36 can be adjusted by driving the movement of the driving screw slide block 41, the reducing driving motor 37 is required to be connected with the reducing slide block 42 to generate synchronous motion with the limiting plate 39, and the meshing relation of the driving gear 38 and the driven gear is ensured; in other embodiments, a linear telescopic cylinder may be used to replace the screw driving motor 43 and the reducing screw 40, and directly drive the screw slider 41 and the reducing slider 42 to move.
In one embodiment, the driving mechanism may be a multi-degree-of-freedom manipulator.
In an embodiment, the driving mechanism comprises a lifting movement mechanism 3, a linear movement mechanism 4 and a swinging mechanism 5 which are sequentially connected, wherein the swinging mechanism 5 is provided with an abrasive belt polishing mechanism, the lifting movement mechanism 3 provides a lifting function, the linear movement mechanism 4 provides linear movement along the axis direction of the pipeline, and the swinging mechanism 5 is used for changing the horizontal inclination angle of the abrasive belt polishing mechanism.
The lifting motion mechanism 3 comprises a support 16, a lifting driving motor 18, a lifting screw rod 15 and a platform supporting plate 14, wherein the lifting screw rod 15 is vertically and rotatably arranged on the support 16, the lifting screw rod 15 is in transmission connection with the lifting driving motor 18, a transmission seat is in threaded connection with the lifting screw rod 15, the transmission seat is connected with the platform supporting plate 14, or the platform supporting plate 14 is directly arranged in threaded connection with the lifting screw rod 15, the lifting motion of the platform supporting plate 14 is controlled by utilizing a screw rod transmission principle, when the lifting motion mechanism is actually designed, a reverser 17 can be arranged at the output end of the lifting driving motor 18, the output end of the reverser 17 is perpendicular to the output end of the driving motor, the reverser 17 is provided with two output ends, the reverser is arranged at the two output ends of the reverser 17 again, the two output ends of the reverser which are perpendicular to the output end of the former reverser 17 are also in transmission with the lifting screw rod respectively, and the four lifting screw rods 15 are arranged in the lifting motion mechanism 3, and the four lifting screw rods 15 can be arranged at four corners of the support 16, so that the stable support of the platform supporting plate 14 is realized.
A plurality of sets of lifting and moving mechanisms 3 can be arranged at the bottom of the platform supporting plate 14, and the plurality of sets of lifting and moving mechanisms 3 share one bracket 16, but four lifting screw rods 15 in each set of lifting and moving mechanism 3 are still arranged according to a rectangle.
The lifting control of the platform support plate 14 can be achieved using linear telescopic cylinders instead of screw drive.
The linear motion mechanism 4 comprises a linear driving motor 23, a speed reducer 22, a transmission belt, belt wheels 21, a linear guide rail 19 and a sliding base 20, wherein the linear driving motor 23 drives the belt wheels 21 to rotate through the speed reducer 22 and the transmission belt, two belt wheels 21 are arranged on a platform supporting plate 14, synchronous belts are sleeved on the two belt wheels 21, the output of the linear driving motor 23 is converted into the motion of the synchronous belts, the linear guide rail 19 is arranged on the platform supporting plate 14, the sliding base 20 is arranged on the linear guide rail 19 in a sliding manner through a sliding block connected with the sliding base 20, the sliding base 20 is connected with the synchronous belts, the sliding base 20 is driven to slide on the linear guide rail 19 during the motion of the synchronous belts, the linear driving motor 23 needs to be connected with the platform supporting plate 14, and the synchronous lifting of the platform supporting plate 14 is guaranteed, and the transmission between the linear driving motor 23 and the belt wheels 21 is guaranteed.
Linear motion control of the slide base 20 may be achieved using a linear telescopic cylinder instead of a belt drive.
The swing mechanism 5 comprises a swing base 28 and a swing driving motor 34, the swing driving motor 34 is arranged on the sliding base 20, a central shaft is arranged at the bottom of the swing base 28 and is in transmission connection with the central shaft through a swing bearing seat 33, the swing driving motor 34 drives the central shaft to rotate through the swing driving motor 34, the swing of the swing base 28 around the axis of the central shaft is reflected, a driving wheel 31 and a grinding wheel 25 are rotatably arranged on the swing base 28, and the position control of the abrasive belt polishing mechanism can be completed by matching with the lifting motion mechanism 3 and the linear motion mechanism 4 at the moment, so that the abrasive belt polishing mechanism can be matched with a pipeline to be polished.
In order to improve polishing effect, the swing base 28 is further provided with a tensioning cylinder 29, a tensioning wheel 30 and at least one auxiliary wheel, the tensioning cylinder 29 is connected with the tensioning wheel 30, the tensioning wheel 30 is abutted to the inner peripheral wall of the abrasive belt by means of telescopic action of the tensioning cylinder 29, tensioning of the abrasive belt is achieved, the problem that polishing effect of the loose abrasive belt is poor is avoided, the two auxiliary wheels are respectively a first auxiliary wheel 26 and a second auxiliary wheel 27 in the embodiment, and the first auxiliary wheel 26 and the second auxiliary wheel 27 are arranged on the inner side of the abrasive belt and are rotatably arranged on the swing base 28, so that transmission stability of the abrasive belt is improved.
The front end of the swing base 28 is provided with a support mechanism mounting plate 45 for mounting the pipe support mechanism 24.
In an embodiment, the polishing conveyor belt 2 comprises a plurality of driving roller sets axially arranged along the pipeline to be polished, the driving roller sets comprise two driving rollers, the axes of the driving rollers are parallel to the axis of the pipeline to be polished, at least one driving roller is connected with a driving motor, the pipeline to be polished is driven to rotate by friction, and when the two driving rollers are respectively connected with the driving motor, the two driving rollers have the same rotation direction.
The pipeline inner circle abrasive belt polishing device also comprises a clamping mechanism 1, wherein the clamping mechanism 1 comprises a clamping base 10, a clamping lifting seat 9, a rotating motor 8, a rotating base 7, an air cylinder support arm 6, a clamping air cylinder 11 and a clamping wheel 13, the clamping lifting seat 9 is arranged on the clamping base 10 in an up-and-down motion mode, the clamping lifting seat 9 freely slides in a sliding groove of the clamping base 10, and meanwhile, a jacking bolt is connected to the clamping base 10 in a threaded manner, and can extend into the sliding groove to abut against the clamping lifting seat 9 through screwing the jacking bolt, so that the position of the clamping lifting seat 9 is locked, or the clamping lifting seat 9 is directly driven to move on the clamping base 10 by using a linear telescopic cylinder; the rotating motor 8 is arranged on the clamping lifting seat 9, the air cylinder support arm 6 is connected with the rotating motor 8 through the rotating base 7, one end of the air cylinder support arm 6, far away from the rotating base 7, is provided with the clamping air cylinder 11, the clamping air cylinder 11 performs vertical telescopic motion, the telescopic end of the clamping air cylinder 11 is rotationally connected with the clamping wheel 13 through the clamping mounting seat 12, the clamping air cylinder 11 can drive the clamping wheel 13 to abut against the top of a pipeline to be polished, limit of the pipeline to be polished is realized by matching with the driving roller, radial displacement of the pipeline to be polished is not generated in the polishing process, simultaneously, before clamping, the clamping air cylinder 11 can be rotated to one side of the pipeline to be polished through the rotating motor 8, after the horizontal height of the clamping air cylinder 11 is adjusted through the clamping lifting seat 9 (a certain adjusting range is reserved, the clamping air cylinder 11 is rotated to the top of the pipeline to be polished, and finally the clamping air cylinder 13 abuts against the pipeline to be polished, so that the position of the clamping wheel 13 can be adjusted on one side, so as to adapt to the pipelines to be polished with different pipe diameters.
In the actual use process, firstly, the height of the clamping wheel 13 is adjusted according to the outer diameter of the pipeline to be polished, after the pipeline to be polished is conveyed onto the polishing conveyor belt 2, the rotating motor 8 is started to control the clamping wheel 13 to rotate to the position right above the pipeline to be polished, then the clamping cylinder 11 is controlled to extend out, the clamping wheel 13 is driven to compress the pipeline to be polished, and then the polishing conveyor belt 2 is started to drive the pipeline to be polished to rotate.
Then, the lifting driving motor 18 is started, the power of the lifting driving motor 18 is transmitted to the lifting screw rod 15 through the reverser 17, and the lifting screw rod 15 is driven to drive the platform supporting plate 14 to be lifted to the designated height. And then, starting the swing driving motor 34 to adjust the angle of the abrasive belt polishing mechanism, and simultaneously starting the linear driving motor 23 to control the abrasive belt polishing mechanism to slide on the linear guide rail 19, when the abrasive belt polishing mechanism stretches into a pipeline to be polished, starting the reducing driving motor 37 and the screw driving motor 43 in the pipeline supporting mechanism 24, transmitting power through a gear engagement mode by the reducing driving motor 37 to drive the driven gear 36 to rotate, thereby driving the supporting arm 35 to move in a limiting groove of the limiting plate 39, expanding and supporting the pipeline wall outwards, driving the reducing screw 40 by the screw driving motor 43 through a synchronous belt to drive the screw slider 41 to move, driving the center of the pipeline supporting mechanism 24 to be substantially centered with the center of the pipeline to be polished, and supporting the pipeline wall by the pipeline supporting mechanism 24. The tensioning cylinder 29 is then started to tension the abrasive belt, the polishing driving motor 32 is started and the linear motion mechanism 4 is matched to drive the abrasive belt to polish the inner wall of the pipeline to be polished.
After the polishing operation is finished, the control platform supporting plate 14 is lifted to separate the abrasive belt from the inner wall of the pipeline, the pipeline supporting mechanism 24 returns to the zero position, then the linear driving motor 23 drives the whole abrasive belt polishing mechanism to withdraw from the inner wall of the pipeline, the polishing driving motor 32 is closed, the tensioning cylinder 29 is adjusted to loosen the abrasive belt, and the machine stops running.
The adaptation to the actual need is within the scope of the invention.
It should be noted that it will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
The principles and embodiments of the present invention have been described in detail with reference to specific examples, which are provided herein to facilitate understanding of the principles and embodiments of the present invention and to provide further advantages and practical applications for those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.